1OKM | pdb_00001okm

CARBONIC ANHYDRASE II COMPLEX WITH THE 1OKM INHIBITOR 4-SULFONAMIDE-[1-(4-AMINOBUTANE)]BENZAMIDE

• PDB DOI: https://doi.org/10.2210/pdb1OKM/pdb

• Classification: LYASE
• Organism(s): Homo sapiens
• Mutation(s): No 


• Deposited: 1996-06-25 Released: 1997-01-11 
• Deposition Author(s): Elbaum, D., Nair, S.K., Patchan, M.W., Thompson, R.B., Christianson, D.W.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 
  0.217 (Depositor) 
• R-Value Work: 
  0.162 (Depositor) 
• R-Value Observed: 
  0.162 (Depositor) 

Literature

Structure-based design of a sulfonamide probe for fluorescence anisotropy detection of zinc with a carbonic anhydrase-based biosensor.

Elbaum, D., Nair, S.K., Patchan, M.W., Thompson, R.B., Christianson, D.W.

(1996) J Am Chem Soc 118: 8381-8387

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 29.7 kDa 
• Atom Count: 2,211 
• Modeled Residue Count: 257 
• Deposited Residue Count: 259 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CARBONIC ANHYDRASE II	A	259	Homo sapiens	Mutation(s): 0  EC: 4.2.1.1 (PDB Primary Data), 4.2.1.69 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P00918 (Homo sapiens) Explore P00918  Go to UniProtKB:  P00918
PHAROS:  P00918 GTEx:  ENSG00000104267

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SAB	D [auth A]	4-SULFONAMIDE-[1-(4-AMINOBUTANE)]BENZAMIDE C11 H17 N3 O3 S ZDYFRIZTYRFPJC-UHFFFAOYSA-N
HG	B [auth A]	MERCURY (II) ION Hg BQPIGGFYSBELGY-UHFFFAOYSA-N
ZN	C [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free:  0.217 (Depositor) 
• R-Value Work:  0.162 (Depositor) 
• R-Value Observed: 0.162 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.7	α = 90
b = 41.7	β = 104.6
c = 73	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
MOSFLM	data reduction
CCP4	data scaling
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1997-01-11 
Deposition Author(s): Elbaum, D., Nair, S.K., Patchan, M.W., Thompson, R.B., Christianson, D.W.

Revision History  

• Version 1.0: 1997-01-11
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-02-14
  Changes: Data collection, Database references, Derived calculations, Other